An airplane on a runway has velocity 5 m/s at clock time t = 10 sec, when it is 89 meters from a certain roadkill, and velocity 8.6 m/s at clock time t = 16 sec.   Between these two clock times it accelerates uniformly at .6 m/s/s.  Find its velocity at the end of the time interval and its average velocity during this time interval.  How far from the roadkill is the airplane at clock time t = 16 sec?